The largest earthworm on record was found in South Africa and measured 22 feet.
151
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
The seahorse is the only fish to have a neck.
12
Jumping fleas can accelerate 50 times faster than the space shuttle.
218
The oldest recorded elephant lived for 82 years.
213
Sharks, like other fish, have their reproductive organs in their chests.
248
Leonardo Da Vinci loved animals so much that he used to buy caged animals at the market just to set them free.
57